package com.atguigu.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/** 自定义校验器
 * @author bing  @create 2020/8/2-11:29 上午
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {

    private Set<Integer> set = new HashSet<>();

    //初始化方法
    @Override
    public void initialize(ListValue constraintAnnotation) {
        // 判断一下是否空值
        int[] vals = constraintAnnotation.vals();
        if (vals != null) {
            for (int val : vals) {
                set.add(val);
            }
        }

    }

    //判断是否校验成功
    /**
     * @param value   需要校验的值
     * @param context
     * @return
     */
    @Override
    public boolean isValid(Integer value, ConstraintValidatorContext context) {

        return set.contains(value);
    }
}
